Carbureter-heater.



B. u. PIERCE. GARBURETER HEATER. APPLICATION IILED JAN.Z7, 1910.

Patentedv July 16, 1912.

1,032,987 SHEETS-SHEET Fig 1 Il ITT -llf l j /7L l l] /1 La l' 0,/ ,o f mal/7 B. N. PIERCE.

. GARBURETER HEATER. APPLICATION FILED mm2?, 1910.

1,032,937. Patented July 16,1912.

3 SHEETS-SHEET 2.

IV] NESSES.: /4

A X70/mm i B. N. PIERCE.

CARBURETER HEATER. APPLICATION FILED JAILzv, 1910.

Patented Ju1y'16,1912.

3 SHEETS-SHEET 3.

ATTO/ENLY.

, air is introduced, anda throttle valve pas- BURT NEULON PIERCE, INDIANAPOLIS, INDIANA.

CARBURETER-HEATER.

Specieation of Letters Patent.

Patented July 1 6, 1912.

Application filed January 27, 1910. Serial No. 540,323. y

To all whom 'it may concemf- Be it known that I, BURT NEULON PIERCE, of Indianapolis, county of Marion, and State of Indiana, have invented a certain nevaA and useful Carbureter-Heater," and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying draw- .1ngs. y

The object of this invention is to provide a practical heater in combination with a carbureter, and an internal combustion engine for preventing the mixture within .the carbureteror throttle valve from freezing, or preventing its non-vaporization.

The chief feature of the invention consists in utilizing the exhaust gases from thel cylinder of the engine for furnishing the heat. In the second place a heater is attached to the carbureter into which the hot sageway extends through said heater from the carbureter to the engine and the throttle valve is fin said passageway andV not in the carbureter proper. Also, the air for the carbureter is heated by saidheater before entering the carbureter, s'o that the fuelwill not have `its temperature reduced when around the needle or nozzle valve suiiciently to prevent'. vaporization. The air for the -carbureter enters through yapipe that leads to a drum surrounding the hot air chamber in the heater intowhich drum-the air enters from the outside.

Another feature of the invention consists lin providing a valve for regulating the admission of exhaust gases from the cylinder of the engine to the heater, and particularly in means for connecting said valve with the incertain relation yto each other and the heating valve'will be actuated at the same time that the throttle valve is actuated.

The nature of the invention will be understood from the accompanying drawings land t-he following description yand claims.

In the drawings: Figure 1 is an elevation ofthe device; F1g. 2is a horizontal section Fig.'3 is an enlarged section on the line 3-3 of Fig. 1; Fig. 4 is a vertical section on the line 4-4 of Fig. 2 in slightly modified form; Fig. 5 is a vertical section on the line 5 5 of Fig. 4, and: Fig. 6 is an 55 elevation of the combined carbureter and throttle valve, so that the two will be held' on the line 2-2 of Fig. 1; on a larger scale;

heater as shown in Fig. 1 but on a large scale.

Thereappear in Fig. l four cylinders of an in'ternal combustion engine to which fuel supply tubesvll lead from the throttle heating chamber 12 andcarbureter 13. l

14 is the exhaust tube leading from the cylinders and conveying the combusted gases therefrom, and a portion of said gases are conducted from the pipe 14 by the iiexible tube 15 to the heater 12, as indicated in Figs. 2`and 4.

The carbureter 13 `may be of any type and the 'details of its construction herein. are

' for that reason not explained.

16 is the fuel supply tube, and hot air comes from the heater through the tube 17 to supply the carbureter Vwith air, and the gas mixed and -formed inthe carbureter enters the lower end of the throttle chamber 19 and passes thence to the cylinder of the engine.. The throttle chamber is closedby a throttle valve 20 mounted on the shaft 21, which carries a throttlelever 22.

The heating mechanism which isthe chief novel feature, consists of'a heating chamber surrounding the throttle chamber 19'and to which the exhaust gas tube 15 leads through a short tube 26, in which the regulatinglvalve 27 is mounted,`as seen in Fig. 4, for controlling the supply of hot exhaust gas. The vlve27 is on a valve stem or rod 28 extending out of the tube and having on it al crank arm 29 which has a longitudinal slot 30 with which a connecting rod 31 is slidably connected by the connection' 32, and

said connecting rbd is pivotally'connected with the throttle lever so that the action of the throttle lever will cause acorresponding actuation of the heat regulating valve 27 for regulating the admission of heating gasf The spring 33 running from one end of the crank arm 29 to an arm 34 tends to maintain the valve 27 normally open. The arm'34 is secured on a threaded sleeve 35 that screws 'l on thetube 26 and has a contracted outer be nearly closed, and this is the 1 A position of the valves when running at4v low speed. At that time, since the passageways around the throttle valve are so slight, the rush of air thereby chills and prevents vaporization of the fuel. VThe tendency to freeze is greater running atlow speed than running at high speed, as the opening is smaller around the throttle valve. Hence it. is desirable at that time to have the valve 27 open to its limit, as shown in Fig. 4. then the speed is greater, the passageways around the throttle valve 20 are not only greater but the gases passing from the cylinders through tubes 14 and 15 are extremely hot, and only a small portion of them need therefore be deflected through tube 15 into the chamber 25. Hence with such a correlative arrangement ofthe val-ves 27 and 20, the valve 27 will be nearly closed when the throttle valve 20 is fully opened. While this is the general rule for the operation of said valve, still the construction is such that the relative position of the valves may be modified as is required at times. This result is obtained by thefollowing arrangement. The throttle lever 22 is rigidly attached at its outer end to the rod 31.

l Loosely mounted on the outer`end of member 31 is the member 32, which is held in place by the duplicate nuts 131. Member 32 j carries a projecting knob or pin not shown, which has a sliding fit in the slot 30 of the lever 29. The spring 33 tends always to pull the lever 29 in the direction of the outer end of the lever 31, so that member 32 It will be apparent that by loosening the outer nut of the pair 131 and adjusting the inner one the active length of the arm' 31 will be changed, and consequently the relat-ive position of the valves 20 'and 27 will be altered. From the throttle lever 22 suitable means is extended whereby it is conveniently operated.

The exhaust gases pass into the lower part of the chamber 25 and around the throttle chamber 19 and out through a tube 38 which leads from the lower end ofsaid chamber 25, and a branch tube 39 that lea-ds from the upper end of the chamber to the tube 38.

'By having two outlets from the heating chamber, one at` each end, the hot gases are made to pass through the chamber at reduced speed and come into immediate contact with the entire length of the duct 19 Within the chamber. The tube 38 is bolted on to the casing 25 by bolts 40 and from that tube the exhaust tube 41 extends, see Fig. 6. The air which enters the carbureter through the tube 17 is heated by coming in through the hoty air drum 18, which surrounds the exhaust gas tube 38.- As seen in Fig. 2, the open end of the hot air drum 18 is next to the casing 25, which is warm, s0

that the air as it enters the drum is heated vent pessible freezing of the mixture at the fuel inlet or valve of the carbureter, or at least prevent non-vaporization- The manner of securing the Hexible tube 15 to the exhaust tube 14 is indicated in Fig. 3. The end of the flexible tube 15 is stretched over a nozzle 50 that tapers in bot-h directions, one end fitting in a taper: ing hole in the pipe 14. A sleeve 51 surrounds the outer tapering end of the nozzle and tube 15 and has arms 52 extending therefrom to one of which a strap of metal 53 is secured at one end, and then it passes around the tube 14 overlapping the legs 54 of a bracket and under the other arm 52 of the sleeve 51 and back again over the bracket arms. The bracket 55 has a set screw 56 in it which screws down against the metal strap and holds it in place and tightens it, and by means of the strap draws the sleeve 51 and nozel 50 tightly toward the tube 14.

While I have herein shown and particu-` to the precise construction and arrangement as herein set forth, but

Having thus described my invention, what.T

I claim as new and desire to secure by Let? ters Patent is 1. The combination of a cylinder of an -l engine, a carbureter, a heater combined with the carbureter through which the throttle passageway extends to the cylinder of the engine, a throttle valve for regulating said passageway in the heater, a chamber in the heater surrounding the portion .of the passageway containing the throttle valve, means for conveying the exhaust gases from the cylinder to said heating chamber, a valve for regulating the admission of said gases to said heating chamber, and an adjustable means connecting said valve and the throttle valve, whereby the desired relative positions of the two valves may be established and' both operated simultane4 l ously.

2. The combination `of a cylinder of an engine, a carbureter, a heater combined with the carbureter through which the throttle passageway extends to the cylinder of the engine, a throttlefvalve forregulating said vpassageway in the heater, achamber in the heater surrounding the portion` ofthe passageway containing the throttle valve, means for conveying the exhaust gases from the cylinder to said heating chamber, a valve for regulating the adlnission of said gases to said heating chamber, an adjustable means connecting the valve for lsaid j heating chamber and the throttle Valve, and a spring tending to close the'valve for said heating chamber.

3. The combination of a cylinder of an engine, a carbureter, a heater combined with the carbureter through which the throttle passageway extends to the cylinder of the engine, a throttle valve for regulating said passageway in the heater, a chamber in the heater surrounding the portion of the passageway containing the throttle valve, means for conveying the exhaust gases from the cylinder to said heating chamber, an`

outlet passageway from said heating chainber, a drum surrounding said passageway adjacent the heating chamber with an opening therein for the admission of air, and an air tube leading from said drum to the carbureter for supplying warm air to the carbureter.

et. A device of the character described comprising an internal combustion engine, a carbureter, a duct from said carbureter to said engine, throttling means for said duct, means for heating the explosive mixture furnished by said carbureter, and means operable simultaneously with said throttling means to regulate said heating means.-

5. In combination an internal combustion engine, a carbureter for supplying explosive fluid, a-heater for heating said explosive fluid, means governing the supply of explosive fluid to said engine, means for regulating said heater and a manually operated device fo-r simultaneously actuating the tivo first aforesaid means.

6. In combination an internal combustion engine, a carbureter for supplying explosive fluid, a heater for heating said explosive fluid, a duct for supplying exhaust gases from said engine to said heater, means governing the supply of explosive fluid to said engine, means for regulating said heater and a manually operated device for simiiltaneo-usly actuating the two first aforesaid means.

7. A device of the character described comprising an internal combustion engine, a carbureter, a duct from said carbureter'to said engine, throttling means for said duct, means for heating the explosive mixture furnished by said carbureter, from the exhaust gases of said engine, and means operable simultaneously with said throttling means to regulate said heating means.`

8. In combination an internal combustion engine, a carbureter for supplying explosive fluid, a heater for heating said explosive fluid, means governing the supply of explosive fluid to said engine, means for regulating said heater, and interlocked maniially controlled operating devices for said Y two means.

fluid, means governing the supply of explosive fluid to said engine, means for regulating said heater, and interlocked adjustable manually operated devices for said two means.

10. In combination an internal combustion engine, a carbureter for supplying explosive fluid, a heater for heating said explosive fluid, means governing thev supply of explosive fluid to said engine, means for regulating said heater, and interlocked operating devices for said two means to operate them inversely whereby as one means increases the supply of 'explosive fluid the other means decreases the heating effect.

11. In combination.. an internal combustion engine, a carbureter for supplying explosive fluid, a heater for heating said explosive fluid, means governing the supply of explosive fluid to said engine, means for regulating said heater, and interlocked adjustable operating devices for said two means to operate them inversely whereby as one means increases the supply of explosive fluid the other means decreases the heating effect.

12. In combination an internal combustion engine, a carbureter for supplying explosive fluid, a heater for heating said explosive fluid, means governing the supply of explosive fluid to said engine, means for regulating said heater, interlocked operating devices for said two means, and mechanism wherebythe relative positions of said means with respect to veach other may be adjusted.

13. In combination an internal combustion engine, a carbureter for supplying explosive fluid, a heat-er for heating said explosive fluid, a duct for supplying exhaust gases from said engine to said heat-er, means governing the supply of explosive fluid to said engine, means for regulating said heater, int-erlocked operating devices for said two means, and mechanism whereby decreasing the heat as the supply of explosive fluid increases.

15. In combination an internal combus` tion engine, a carbureter for supplying an explosive fluid, a heater for heating said exv plosive fluid, means governing the amount of explosive fluid supplied tx) said engine, means for regualting said' heater and an operating device for simultaneously actiiating the two first aforesaid means.

16. In vcombination an internal combiistio-n engine, a carbureter for supplying an explosive fluid, a heater for lieat-ing said explosive fluid, .ad'uct for supplying exhaust ist gases from said engine to said heater, means for governing the amount 'of explosive fluid supplied to said engine, means for regulating said heater, and an operating device for simultaneously actuating the two first aforesaid means.

17. In combination an internal combustion engine, a earbureter for supplying explosive fluid, a heater for heating said eX- plosive Huid, and means for increasing the ysupply of explosive fluid and simultaneously diminishing the heating effect thereon.

18. In combination an internal combustion engine, a earbureter for supplying explosive fluid, a heater for heatin said explosive fluid and means for diminlshing the supplj,7 of explosive fluid and simultaneously increasing the heating' eiect thereon.

19. In a device of the class described, inv

combination, a carbureter, a throttle valve for governing thesupply of explosive mixture from the carbureter, a heater for heating said mixture, a regulating valve for controlling the heating agent for said heater, lever arms for operating said valves, one of said arms having a slot and a rod connected to the other of said arms and carrying a pin working in said slot.

In Witness whereof, I have hereunto at'- fixed my signature in the presence of the Witnesses herein named.

BURT NEULON PIERCE.

Witnesses G. H. BOINK, O. M. MCLAUGHLIN. 

